package comment should be of the form "Package constants ..."

exported type R should have comment or be unexported

comment on exported type TLSCred should be of the form "TLSCred ..." (with optional leading article)

exported const AllAFTs should have comment (or a comment on this block) or be unexported

comment on exported const UnsupportedParameters should be of the form "UnsupportedParameters ..."

comment on exported const ParamsDifferFromOtherClients should be of the form "ParamsDifferFromOtherClients ..."

type name will be used as server.ServerOpt by other packages, and that stutters; consider calling this Opt

comment on exported function WithRIBResolvedEntryHook should be of the form "WithRIBResolvedEntryHook ..."

comment on exported function InvalidParamsAndAFTOperation should be of the form "InvalidParamsAndAFTOperation ..."